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    Spinning low fluorosurfactant fluoropolymer dispersions
    1.
    发明授权
    Spinning low fluorosurfactant fluoropolymer dispersions 有权
    旋转低含氟表面活性剂含氟聚合物分散体

    公开(公告)号：US07985361B2

    公开(公告)日：2011-07-26

    申请号：US12124271

    申请日：2008-05-21

    申请人： Devin Flowers ,  Clay Woodward Jones ,  Robert John Cavanaugh

    发明人： Devin Flowers ,  Clay Woodward Jones ,  Robert John Cavanaugh

    IPC分类号： D01F6/12

    CPC分类号： D01F6/12 ,  C08L1/00 ,  C08L27/18 ,  C08L29/14 ,  C08L71/02 ,  C08L2205/03 ,  C08L2205/16 ,  D01F6/48 ,  Y10T428/3154 ,  C08L2666/04 ,  C08L2666/02

    摘要： A process for dispersion spinning non-melt-processible fluoropolymer fiber in which a mixture of an aqueous dispersion of non-melt-processible polytetrafluoroethylene or modified polytetrafluoroethylene fluoropolymer particles and an aqueous solution of matrix polymer is formed. The non melt-processible particles have an SSG of less than about 2.40. The aqueous dispersion contains an aliphatic alcohol ethoxylate nonionic surfactant having a 20% residuals temperature determined by thermogravimetric analysis (TGA) of less than about 290° C. and is essentially free of surfactants containing aromatic groups. The dispersion has a fluorinated surfactant content of less than about 300 ppm. The mixture is extruded into a coagulation bath containing a concentration of ions which coagulate the matrix polymer to form an intermediate fiber structure. The intermediate fiber structure is sintered to decompose the matrix polymer and coalesce. The present invention also provides a spinning composition useful for the dispersion spinning of non-melt-processible fluoropolymer fiber.

    摘要翻译： 一种分散纺丝非熔体加工性含氟聚合物纤维的方法，其中形成了不可熔融加工的聚四氟乙烯或改性聚四氟乙烯含氟聚合物颗粒的水分散体和基质聚合物水溶液的混合物。 不可熔融加工的颗粒具有小于约2.40的SSG。 水性分散体含有脂肪醇乙氧基化物非离子表面活性剂，其具有通过热重分析（TGA）测定的低于约290℃的20％残留温度，并且基本上不含含芳族基团的表面活性剂。 分散体具有小于约300ppm的氟化表面活性剂含量。 将混合物挤压成含有浓缩离子的凝固浴，其凝结基质聚合物以形成中间纤维结构。 中间纤维结构被烧结以分解基体聚合物并聚结。 本发明还提供了一种可用于不可熔融加工的含氟聚合物纤维的分散纺丝的纺丝组合物。

    Spinning low fluorosurfactant fluoropolymer dispersions
    2.
    发明授权
    Spinning low fluorosurfactant fluoropolymer dispersions 有权
    旋转低含氟表面活性剂含氟聚合物分散体

    公开(公告)号：US07390448B2

    公开(公告)日：2008-06-24

    申请号：US11494893

    申请日：2006-07-28

    申请人： Devin Flowers ,  Clay Woodward Jones ,  Robert John Cavanaugh

    发明人： Devin Flowers ,  Clay Woodward Jones ,  Robert John Cavanaugh

    IPC分类号： D01F6/12

    CPC分类号： D01F6/12 ,  C08L1/00 ,  C08L27/18 ,  C08L29/14 ,  C08L71/02 ,  C08L2205/03 ,  C08L2205/16 ,  D01F6/48 ,  Y10T428/3154 ,  C08L2666/04 ,  C08L2666/02

    摘要： A process for dispersion spinning non-melt-processible fluoropolymer fiber in which a mixture of an aqueous dispersion of non-melt-processible polytetrafluoroethylene or modified polytetrafluoroethylene fluoropolymer particles and an aqueous solution of matrix polymer is formed. The non melt-processible particles have an SSG of less than about 2.40. The aqueous dispersion contains an aliphatic alcohol ethoxylate nonionic surfactant having a 20% residuals temperature determined by thermogravimetric analysis (TGA) of less than about 290° C. and is essentially free of surfactants containing aromatic groups. The dispersion has a fluorinated surfactant content of less than about 300 ppm. The mixture is extruded into a coagulation bath containing a concentration of ions which coagulate the matrix polymer to form an intermediate fiber structure. The intermediate fiber structure is sintered to decompose the matrix polymer and coalesce. The present invention also provides a spinning composition useful for the dispersion spinning of non-melt-processible fluoropolymer fiber.

    摘要翻译： 一种分散纺丝非熔体加工性含氟聚合物纤维的方法，其中形成了不可熔融加工的聚四氟乙烯或改性聚四氟乙烯含氟聚合物颗粒的水分散体和基质聚合物水溶液的混合物。 不可熔融加工的颗粒具有小于约2.40的SSG。 水性分散体含有脂肪醇乙氧基化物非离子表面活性剂，其具有通过热重分析（TGA）测定的低于约290℃的20％残留温度，并且基本上不含含芳族基团的表面活性剂。 分散体具有小于约300ppm的氟化表面活性剂含量。 将混合物挤压成含有浓缩离子的凝固浴，其凝结基质聚合物以形成中间纤维结构。 中间纤维结构被烧结以分解基体聚合物并聚结。 本发明还提供了一种可用于不可熔融加工的含氟聚合物纤维的分散纺丝的纺丝组合物。

    Spinning Low Fluorosurfactant Fluoropolymer Dispersions
    3.
    发明申请
    Spinning Low Fluorosurfactant Fluoropolymer Dispersions 有权
    纺丝低氟表面活性剂含氟聚合物分散体

    公开(公告)号：US20080221250A1

    公开(公告)日：2008-09-11

    申请号：US12124271

    申请日：2008-05-21

    申请人： Devin Flowers ,  Clay Woodward Jones ,  Robert John Cavanaugh

    发明人： Devin Flowers ,  Clay Woodward Jones ,  Robert John Cavanaugh

    IPC分类号： C08K5/05

    CPC分类号： D01F6/12 ,  C08L1/00 ,  C08L27/18 ,  C08L29/14 ,  C08L71/02 ,  C08L2205/03 ,  C08L2205/16 ,  D01F6/48 ,  Y10T428/3154 ,  C08L2666/04 ,  C08L2666/02

    摘要： A process for dispersion spinning non-melt-processible fluoropolymer fiber in which a mixture of an aqueous dispersion of non-melt-processible polytetrafluoroethylene or modified polytetrafluoroethylene fluoropolymer particles and an aqueous solution of matrix polymer is formed. The non melt-processible particles have an SSG of less than about 2.40. The aqueous dispersion contains an aliphatic alcohol ethoxylate nonionic surfactant having a 20% residuals temperature determined by thermogravimetric analysis (TGA) of less than about 290° C. and is essentially free of surfactants containing aromatic groups. The dispersion has a fluorinated surfactant content of less than about 300 ppm. The mixture is extruded into a coagulation bath containing a concentration of ions which coagulate the matrix polymer to form an intermediate fiber structure. The intermediate fiber structure is sintered to decompose the matrix polymer and coalesce. The present invention also provides a spinning composition useful for the dispersion spinning of non-melt-processible fluoropolymer fiber.

    摘要翻译： 一种分散纺丝非熔体加工性含氟聚合物纤维的方法，其中形成了不可熔融加工的聚四氟乙烯或改性聚四氟乙烯含氟聚合物颗粒的水分散体和基质聚合物水溶液的混合物。 不可熔融加工的颗粒具有小于约2.40的SSG。 水性分散体含有脂肪醇乙氧基化物非离子表面活性剂，其具有通过热重分析（TGA）测定的低于约290℃的20％残留温度，并且基本上不含含芳族基团的表面活性剂。 分散体具有小于约300ppm的氟化表面活性剂含量。 将混合物挤压成含有浓缩离子的凝固浴，其凝结基质聚合物以形成中间纤维结构。 中间纤维结构被烧结以分解基体聚合物并聚结。 本发明还提供了一种可用于不可熔融加工的含氟聚合物纤维的分散纺丝的纺丝组合物。

    Process for forming filled bearings from fluoropolymer dispersions stabilized with anionic polyelectrolyte dispering agents
    4.
    发明授权
    Process for forming filled bearings from fluoropolymer dispersions stabilized with anionic polyelectrolyte dispering agents 有权
    用阴离子聚电解质分散剂稳定的含氟聚合物分散体形成填充轴承的方法

    公开(公告)号：US07914853B2

    公开(公告)日：2011-03-29

    申请号：US12791911

    申请日：2010-06-02

    申请人： Robert John Cavanaugh ,  Clay Woodward Jones

    发明人： Robert John Cavanaugh ,  Clay Woodward Jones

    IPC分类号： B05D3/02

    CPC分类号： C08L27/18 ,  C08K3/24 ,  C08L1/08 ,  C08L33/02 ,  C08L33/14 ,  C08L79/08 ,  C09D127/18 ,  C08L2666/26 ,  C08L2666/04 ,  C08L2666/20

    摘要： The present invention provides a process for making a filled fluoropolymer bearing comprising providing an aqueous fluoropolymer dispersion comprising fluoropolymer particles and anionic polyelectrolyte dispersing agent in an amount sufficient for stabilization. The dispersion contains less than about 300 ppm fluorosurfactant based on the weight of the dispersion. The dispersion is coagulated to make a mush and a bearing filler is added to the dispersion prior to or after making the mush. The mush containing bearing filler is applied onto a bearing substrate to produce a coated substrate which is sintered and formed into a bearing.

    摘要翻译： 本发明提供了一种制备填充的含氟聚合物轴承的方法，包括提供含氟聚合物颗粒和阴离子聚电解质分散剂的水性含氟聚合物分散体，其量足以使其稳定。 基于分散体的重量，分散体含有少于约300ppm的含氟表面活性剂。 分散体凝结成糊状物，并且在制备糊料之前或之后将分散体加入到分散体中。 将含糊的含轴承填料施加到轴承基材上以制备被烧结并形成轴承的涂覆基材。

    Process for forming filled bearings from fluoropolymer dispersions stabilized with anionic polyelectrolyte dispersing agents
    6.
    发明授权
    Process for forming filled bearings from fluoropolymer dispersions stabilized with anionic polyelectrolyte dispersing agents 失效
    用阴离子聚电解质分散剂稳定的氟聚合物分散体形成填充轴承的方法

    公开(公告)号：US07754287B2

    公开(公告)日：2010-07-13

    申请号：US11804547

    申请日：2007-05-18

    申请人： Robert John Cavanaugh ,  Clay Woodward Jones

    发明人： Robert John Cavanaugh ,  Clay Woodward Jones

    IPC分类号： B05D3/02

    CPC分类号： C08L27/18 ,  C08K3/24 ,  C08L1/08 ,  C08L33/02 ,  C08L33/14 ,  C08L79/08 ,  C09D127/18 ,  C08L2666/26 ,  C08L2666/04 ,  C08L2666/20

    摘要： The present invention provides a process for making a filled fluoropolymer bearing comprising providing an aqueous fluoropolymer dispersion comprising fluoropolymer particles and anionic polyelectrolyte dispersing agent in an amount sufficient for stabilization. The dispersion contains less than about 300 ppm fluorosurfactant based on the weight of the dispersion. The dispersion is coagulated to make a mush and a bearing filler is added to the dispersion prior to or after making the mush. The mush containing bearing filler is applied onto a bearing substrate to produce a coated substrate which is sintered and formed into a bearing.

    摘要翻译： 本发明提供了一种制备填充的含氟聚合物轴承的方法，包括提供含氟聚合物颗粒和阴离子聚电解质分散剂的水性含氟聚合物分散体，其量足以使其稳定。 基于分散体的重量，分散体含有少于约300ppm的含氟表面活性剂。 分散体凝结成糊状物，并且在制备糊料之前或之后将分散体加入到分散体中。 将含糊的含轴承填料施加到轴承基材上以制备被烧结并形成轴承的涂覆基材。

    Process for Forming Filled Bearings from Fluoropolymer Dispersions Stabilized with Anionic Polyelectrolyte Dispersing Agents
    7.
    发明申请
    Process for Forming Filled Bearings from Fluoropolymer Dispersions Stabilized with Anionic Polyelectrolyte Dispersing Agents 有权
    用阴离子聚电解质分散剂稳定的含氟聚合物分散体形成填充轴承的方法

    公开(公告)号：US20100239768A1

    公开(公告)日：2010-09-23

    申请号：US12791906

    申请日：2010-06-02

    申请人： Robert John Cavanaugh ,  Clay Woodward Jones

    发明人： Robert John Cavanaugh ,  Clay Woodward Jones

    IPC分类号： B05D3/02

    CPC分类号： C08L27/18 ,  C08K3/24 ,  C08L1/08 ,  C08L33/02 ,  C08L33/14 ,  C08L79/08 ,  C09D127/18 ,  C08L2666/26 ,  C08L2666/04 ,  C08L2666/20

    摘要： The present invention provides a process for making a filled fluoropolymer bearing comprising providing an aqueous fluoropolymer dispersion comprising fluoropolymer particles and anionic polyelectrolyte dispersing agent in an amount sufficient for stabilization. The dispersion contains less than about 300 ppm fluorosurfactant based on the weight of the dispersion. The dispersion is coagulated to make a mush and a bearing filler is added to the dispersion prior to or after making the mush. The mush containing bearing filler is applied onto a bearing substrate to produce a coated substrate which is sintered and formed into a bearing.

    摘要翻译： 本发明提供了一种制备填充的含氟聚合物轴承的方法，包括提供含氟聚合物颗粒和阴离子聚电解质分散剂的水性含氟聚合物分散体，其量足以使其稳定。 基于分散体的重量，分散体含有少于约300ppm的含氟表面活性剂。 分散体凝结成糊状物，并且在制备糊料之前或之后将分散体加入到分散体中。 将含糊的含轴承填料施加到轴承基材上以制备被烧结并形成轴承的涂覆基材。